Furthermore, the use of integral field spectrographs (IFSs) at 8-10m class telescopes has proven to be a very efficient tool for searching DLA galaxies and for characterizing their environment out to several hundreds of kiloparsecs
[1]}, [2]}, [3]}, [4]}.
For example, using the MUSE IFS at the VLT telescope, [3]} have detected a tantalizing
example of extended Ly\(\alpha \)  emission tracing gas in a region of about 50 kpc near a \(z\approx 3\)  DLA. This region
hosts multiple galaxies, possibly in a filament,
with Ly\(\alpha \)  emission induced by in-situ star formation likely triggered by interactions.
